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<DIV><FONT face=Arial size=2>Don't know if its directly related,but I built a
removablestab with elevator counter balances at the tips on a pattern
plane. Flew terrible at low speed. replaced it with a regular stab
and fixed tips and it flew great. The elv is a very important surface and
I would do everything to reduce unwanted turbulence.</FONT></DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob Pastorello</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 29, 2005 8:34
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: No fixed tips?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I have to agree about the "boxed in" setups being
somewhat smoother, and having less wear and tear on the servos.</FONT></DIV>
<DIV><FONT face=Arial size=2> And ARF-ers' *are* doing
it... both the Arresti I flew, and this Icepoint have tips on ALL control
surfaces. And I don't think they would do that if there wasn't at least
a "belief" that they were needed.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Doubt that there's good scientific data about
this on our models...but sure a lot of anecdotal evidence to support having
tips installed!</FONT></DIV>
<DIV><BR>Bob Pastorello<BR>NSRCA 199 AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=troy_newman@msn.com href="mailto:troy_newman@msn.com">Troy A.
Newman</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 29, 2005 8:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: No fixed tips?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>They don't fly the same....and the aileron thru
the tip thing wears out servo pots faster. I flew a model this past summer
and it went thru aileron servo pots in 50 flights. I normally get well over
100-125 flights. And this was a wood model so the vibration was better
damped than a composite fuse.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wing tips have lots of turbulence coming off of
them...then stick a aileron in this turbulence. NOPE not the best from an
engineering standpoint. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The answer guys and manufacturers give is it
snaps better. My answer is design a good wing and it will snap better.
Copy a good wing and it will snap better. The ailerons become more
effective with the area at the tip....but I don't feel it helps flight
performance. Aileron thru the tip is much easier and faster to build
than a boxed in version. on the ARFy stuff its cheaper...this is the biggest
reason I think its done.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>As for elevators without tips there are no
references. And the same things apply</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>All my models have them boxed and will have
them boxed in.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Troy</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=twtaylor@ftc-i.net href="mailto:twtaylor@ftc-i.net">Tim
Taylor</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 29, 2005 7:46
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> No fixed tips?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>No fixed tips at the end of the wing/stab
seems to be the rage. Any real reason for this? I really don't care for
this very much as it makes it harder to make sure your trim is right and
the elev half's
meet.</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>